Recently, a batch of ultra-long high-performance extruded finned tubes was shipped to Punjab, Pakistan, for the capacity-expansion and retrofitting project of the air-cooled heat exchanger (air-cooler) system.
The project site in Punjab sees summer maximum temperatures consistently above 45°C, with plant-site conditions featuring sand-dust and trace corrosive industrial gases. The end-user has selected Chinese-manufactured 15.875 mm extruded finned tubes as the core heat-transfer components for air-cooler renovation. Each supplied tube bundle reaches nearly 17.7 meters in length. The ultra-long tube design reduces the quantity of tube-sheet joints and lowers the risk of heat-exchanger leakage. Thanks to the integrally extruded structure with zero clearance between fins and the base tube, the product delivers excellent resistance to high-temperature, sand-dust and corrosion, maintains long-term stable heat-transfer performance, and is well-suited to the high-temperature desert operating conditions in Pakistan.
This project covers the upgrade and renovation of the waste-heat cooling system for a local refinery/petrochemical unit in Punjab, focusing on spare-parts expansion and air-cooled tube-bundle replacement. It also ranks among the 2026 heat-exchange-equipment procurement orders in Pakistan’s petrochemical sector.